Gravity-carrier.



R. P. MATHEWS. A

GRAVTY CARRIER.

APPMGATION FILED 00T.17,1906.

Patented Dee. 13,1910.

UNITED srnrns rnrnNT ormoni.

nnrUs P. MATHEWS,

GRAVITY-CARRIER.

oregano.

Td all 'whom 'it may concern: 'Be it known that I, 'Rei-Us P.

Specification of Letters Patent. Patented Dee., 13, 19] 0 Applicationinea october# 17, 190e.- serial No. 339,379.. l

OF ST. PAUL, MINNESOTA, ASSIGNOR TO MATHEXVS GRAVITA CARRIER CO.,`OF ST.AUL, MINNESOTA.

lof St. Paul, Ramsey county, Minnesota,have

invented certain-new and-useful Improvements in Gravity-Carriers, ofwhich the following is a specification.

Y The object' of my invention is to provide a carrier adaptedparticularly for transporting by 'cavity small artlcles such as brick',tbe'iol "f s beingntilizedfm the carrier: surfacfrind anti-fr'ction'bearings be- 'i'ng 4providedthlffprf lwll more ini l-.tli Jdrtidhetpthe,leest .Issi'stanceor lengtliivseof the c'arrif 1'5 The invention.eo'n'sists'generallyin. a v'car- 1 rier having side`rails' -,providedw1th slots detachably mounted xn Asaid notches where- J by anyfrollercanfbe'removed from the. "2 'triervithoutjdisturbingthe other rollers."

`lfnrther.' the invention. consists in various f olitlin the clains, 26the accompanying drawings, forming daar-tof this specilication, Figure 1is-a plan .Yieyvo one side of a carrier. showing .the inannefr .of-Ec'cupling'- the' :sections together. Fig. 2 isanedge o r side view ofthe same. 3 0 Fig-3 isja' p lan view of the carrier with the rollersremoved. Fig. Lisa transverse sec- -tiona-l :ff-.view illustrating the"manner of mounting the rollers on their su ports. In the drawing, :2represents the side rails 3.5 of-the carrier. composed preferably oftlat Steel bars. These bars are provided at in- "eferyalsin their upperedges with vertical slgtsorfnotches 3 adapted tn reccive'rods 4 r.fia-'ving threaded ends :and "provided with fo'lllockmnts and 6,thejormeron the outside Tof '.tlie bars and `the""ltter 1'between them.1 Hubs *.7 are fitted on the threaded ends of the, rods and held inglace by th lock nuts 6"and provided .'wit annular. gl'ooves 8 13ers are'composed preferably, if .cylindrical sectionsof steel tu in 10 havingopen ends Vtoreceive heads 11`A tting snugly therein, heads havingcentral holes to `receive @the hubs 7 and annular-'Ways 12 between whichand the grooves in said hubs, the bearing balls are held. Flanges 13 areprovided at the peri heries of the heads forming bearing sur aces for'articles passing over the'carrier of greater length than the that thearticles f nstruc'tions and combinatidiiagall'ashere, afterdescribedvand' particlarly'f"plnted\ tion by rivets 1G.

. l rollers'. The rollers are held securely in M x'rI-Inws, 5

place on the rods 4: by the -lock nuts G bearing on the outer ends ofthe hubs. Any roller can be easily removed from the carrier b vloosening the lock 'nuts 5. 'lhe rollers 6g' are )laced sufficientlynear together so 'that -small articles cannot drop down between them.'The sides ofthe carrier areheld'in parallel relation with one 'nnotherby means of braces 14 c0ns1sting-- referably of vfiat es metalbars'having upd'ait lyturned ends 15 riveted tot-beside bar s of thecarriere and Asecured together at v tl1ei1""'p'oi1'1ts of intersec-Cross bars 1' may. also` be provided,- secured in asimilar manner totthe 'Side'railsl' f:or notches'inlthiriupper'edges and rollersVariousforms of cou Vling devices may be providedfr uniting jt 'e endsof the sec- `tionsfbut I- refento provide 'a t'ongue 19 ofi-'set it fromthe'iplane of the rail and adapted fgtbetyveen a p1ate20 and the ontheendp .eachrail- 2 bent outwardly to 75 -The plate 20 and tongue 19may be urthcr secured together by a bolt 21 which however is oftenomitted, the slot 1S and rivet 17 85 connection being sufficient to holdthe s ections inthci properrelative-positions;

I claim as my invention 1. A gravity carrier having side rails composedof flat metal bars having slots or notches in their upper edges, rodsdetachabl mounted in said slots and connecting sai rails, and rollershaving anti-:friction bearin on said rods, substantially as de.-

2. A gravity carrier comprising'side rails having slots or notches intheir upper edges at intervals, and -idle rollers extending across the carrier from side to side detachably mounted in said notches.

3. 4A gravity carrier comprising side 'rails and braces connecting themat intervals, said rails having vertical slots or notches in their upperedges and idle rollers mounted in said slots and extendingacross thecarrier from side to side, each roller being removable withoutdisturbing the other rollers.

4. A ravity carrier comprising side rails, diagon. lyarranged brace barsconnecting said rails, cross rods also connecting said rollers havinganti-friction. bearings on said hubs, substantially as described. 10

6. .A ravity carrier comprisingside rails and ro s connecting them atintervals and having lock nuts, rollers composed of cy1indricalsectionsof steel tubing having open ends and heads iitting withinsaid ends, hubs mounted on said rods and held by said nuts,

and ball bearin's interposedfbetween said scribed.

hubs and said eads, substantially as de- 7. A gravity carrier composedof sec-tions having side rails, the ends of the rails of one .notches in"t ieir lower edges, plates secured to. the ends of the contiguoussection and offset therefrom, rivets f connecting said plates and theends-of the. railsand adapted to enter the slots in said tonguesandhold.

the sections 1n aline'nient with oneanother, substantially as described.f

v 8. A gravity carrier comprising side rails' 'having slots in theirupper edges at intervals and 'braces connecting saidrails and holdingthem in arallelrelation, rods-hayi'ng threaded en s fitting within'said' slts and provided with lock nuts'on saidends -on the outsideofsaid rails andbetivee'n them,

hubs provided onthe endsof saidrods and rollers having anti-friction.bearings-:on said `9. A gravit' carrier comprisingside rails,

' Arods having t "er ends ni'nounted o'n said rls and anti-friction idlerollers journaled on' said rods between said`rails and extending.;across the carrier from side to -side and dis-'f2 l osed suicientlynearY to one another to-f orm a substantially continuous carry surface,said rods being removable from said rails without separation from saididle rollers, whereby any'roller, with its' rod. may-- be removed fromthe 4carrier without.. disturbing the other rollers and rods.

' 10. A gravity carrier comprisin metallic side rail having notchedlupper es, rods i' detchb ymounted insaid'notches'and'idle rollerscomposed of tubing journaled rods between v said rails. In witnes swhereo f, I have hereuntoI set my handthisth day 'of October, 1906.

i 'RUFUS P. MAlfHEWS.

tVitnesses: A

RICHARD PAUL, J. B. EVA

